Lab perceptual training improves autistic children's use of duration and intensity to mark on-focus words in speech production¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r? · q3
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? After lab perceptual training, autistic children produced narrow and contrastive on-focus words with significantly longer duration than broad focus words, a pattern absent before training. → Chen 2026 q3 i? After lab perceptual training, contrastive on-focus words showed significantly higher mean intensity than broad focus words, a pattern not observed pre-training. → Chen 2026 (2)

Evidence¶

Chen 2026¶

Chen, S., Wang, B.X., Cheung, J.C.-W. et al. (2026). Lab perceptual training and robot-assisted training in improving speech prosody of autistic children. npj Science of Learning. https://doi.org/10.1038/s41539-026-00425-7

q3 · i? · causal · r?

Pre/post speech production comparison within the lab perceptual training group of the randomized training study. Post-hoc LMM comparisons showed on-focus durational expansion emerged only after training; the article reports no effect size.

"For the lab perceptual training group, participants produced both narrow and contrastive on-focus words with significantly longer duration than broad focus words in post-training sessions, while this pattern is absent in pre-training sessions."

Chen 2026 (2)¶

Chen, S., Wang, B.X., Cheung, J.C.-W. et al. (2026). Lab perceptual training and robot-assisted training in improving speech prosody of autistic children. npj Science of Learning. https://doi.org/10.1038/s41539-026-00425-7

q3 · i? · causal · r?

Pre/post LMM post-hoc comparisons of mean intensity in the lab perceptual training group; the significant post-training contrastive on-focus vs broad focus difference was absent pre-training. No effect size printed.

"for the lab perceptual training group, the narrow and contrastive on-focus words had higher mean intensity than broad focus words with a significant difference between contrastive on-focus and broad focus words in post-training sessions, while this pattern is not observed in pre-training sessions."

Discussion¶

Related Claims¶

• Autistic children receiving no training show no significant improvement in on-focus expansion of f0, duration or intensity — related
• Typically developing Cantonese children mark focus with post-focus compression of duration, f0 and intensity — related
• Robot-assisted training with simulated social interaction improves autistic children's on-focus durational expansion and post-focus f0 compression — related
• Robot-assisted training effects on on-focus expansion are limited to contrastive focus and do not extend to narrow focus — related